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Study finds all-electric rideshare fleet could reduce carbon emissions, but increase traffic issues

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Major ridesourcing companies Uber and Lyft have promised all-electric fleets by 2030 in an effort to reduce their carbon footprint. Overall, electrification reduces net external costs to society by 3–11% (5–24¢ per trip), depending on the assumed social cost of carbon. —Mohan et al. Mohan et al.

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Stanford study quantifies energetic costs of grid-scale energy storage over time; current batteries the worst performers; the need to improve cycle life by 3-10x

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A plot of ESOI for 7 potential grid-scale energy storage technologies. Benson from Stanford University and Stanford’s Global Climate and Energy Project (GCEP) has quantified the energetic costs of 7 different grid-scale energy storage technologies over time. Credit: Barnhart and Benson, 2013. Click to enlarge.

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Highview Power and Encore Renewable Energy to co-develop the first long-duration, liquid-air energy storage system in US

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With Highview Power’s liquid air energy storage solution, excess or off-peak electricity is used to clean and compress air which is then stored in liquid form in insulated tanks at temperatures approaching -320 ?F

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ORNL study finds best current use of natural gas for cars is efficient production of electricity for EVs

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However, they also noted, high PTW efficiencies and the moderate fuel economies of current compressed natural gas vehicles (CNGVs) make them a viable option as well. If CNG were to be eventually used in hybrids, the advantage of the electric generation/EV option shrinks. Their open access paper is published in the journal Energy.

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A123 Systems to supply 1MW Li-ion grid storage system to Maui Electric Company; 2MW system for NSTAR demonstration

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Li-ion battery maker A123 Systems will supply a Grid Battery System (GBS) to Maui Electric Company (MECO), a utility serving residents and businesses on the islands of Maui, Lanai and Molokai in Hawaii. The system, NSTAR’s first battery energy storage project, is proposed for installation at a substation in Medway, Mass.

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More details about California’s proposal requiring bidirectional charging capabilities for all EVs

Charged EVs

In recent testimony, Nuvve CEO Gregory Poilasne told the lawmakers that bidirectional charging can reduce the total cost of EV ownership, and that it’s essential for integrating more renewable energy into the grid. Going bi adds several nifty new benefits to driving electric. That’s one way.

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Royal Academy of Engineering Report Says EV Success Depends on Low-Carbon Electricity, Universal Broadband Provision and Smart Grids

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The introduction of electric vehicles on a large scale in the UK can only have a beneficial effect on CO 2 emissions if low-carbon electricity, universal broadband provision and smart grids are in place to support the transition, according to a new report published by the UK Royal Academy of Engineering.

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